Baseball fired out of a cannon at 1000 mph.
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Previously:
https://www.homemadetools.net/forum/...187#post191824
https://www.homemadetools.net/forum/...363#post131240
https://www.homemadetools.net/forum/...960#post168010
https://www.homemadetools.net/forum/...638#post136459
https://www.homemadetools.net/forum/...932#post124835
https://www.homemadetools.net/forum/...059#post134185